assertEditModeEnabled example

$block->mouseOver();
    $block->click();
    $this->waitForOffCanvasToOpen();
    $this->assertOffCanvasBlockFormIsValid();
  }

  /** * Enables edit mode by pressing edit button in the toolbar. */
  protected function enableEditMode() {
    $this->pressToolbarEditButton();
    $this->assertEditModeEnabled();
  }

  /** * Disables edit mode by pressing edit button in the toolbar. */
  protected function disableEditMode() {
    $this->assertSession()->assertWaitOnAjaxRequest();
    $this->pressToolbarEditButton();
    $this->assertEditModeDisabled();
  }

  

foreach ($this->getTestThemes() as $theme) {
      $this->enableTheme($theme);
      $block = $this->placeBlock('system_powered_by_block');
      foreach (['contextual_link', 'toolbar_link'] as $enable_option) {
        $this->drupalGet('user');
        $this->assertEditModeDisabled();
        switch ($enable_option) {
          // Enable Edit mode.           case 'contextual_link':
            $this->clickContextualLink($this->getBlockSelector($block), "Quick edit");
            $this->waitForOffCanvasToOpen();
            $this->assertEditModeEnabled();
            break;

          case 'toolbar_link':
            $this->enableEditMode();
            break;
        }
        $this->disableEditMode();

        // Make another page request to ensure Edit mode is still disabled.         $this->drupalGet('user');
        $this->assertEditModeDisabled();